/// <summary>
/// Determine if clear the context.
/// </summary>
/// <param name="sc">current step context.</param>
/// <param name="cancellationToken">cancellation token.</param>
/// <returns>Task completion.</returns>
public async Task <DialogTurnResult> ClearContext(WaterfallStepContext sc, CancellationToken cancellationToken = default(CancellationToken))
{
var state = await this.accessors.ToDoSkillState.GetAsync(sc.Context);
var topIntent = ((ToDo)state.LuisResult)?.TopIntent().intent;
if (topIntent == ToDo.Intent.ShowToDo)
{
state.ShowToDoPageIndex = 0;
state.ToDoTaskActivities = new List <ToDoTaskActivityModel>();
state.ToDoTaskAllActivities = new List <ToDoTaskActivityModel>();
}
else if (topIntent == ToDo.Intent.Next)
{
if ((state.ShowToDoPageIndex + 1) * state.PageSize < state.ToDoTaskAllActivities.Count)
{
state.ShowToDoPageIndex++;
}
}
else if (topIntent == ToDo.Intent.Previous && state.ShowToDoPageIndex > 0)
{
state.ShowToDoPageIndex--;
}
else if (topIntent == ToDo.Intent.AddToDo)
{
state.ToDoTaskContent = null;
await ToDoHelper.DigestLuisResultAsync(sc.Context, this.accessors);
}
else if (topIntent == ToDo.Intent.MarkToDo || topIntent == ToDo.Intent.DeleteToDo)
{
state.ToDoTaskIndexes = new List <int>();
state.MarkOrDeleteAllTasksFlag = false;
state.ToDoTaskContent = null;
await ToDoHelper.DigestLuisResultAsync(sc.Context, this.accessors);
}
return(await sc.NextAsync());
}